Frustrated customer

I was called to do an upgrade to my DSTV on a price lock promotion the person that sold this to me assured me she would call back after it was delivered to plan for installation. To date no one has called I have laid a complaint directly and once someone responded and said they tried to call me immediately I responded and said call again since then have heard nothing back. By the end of the month I will be charged double because of an irresponsible sales lady. I want nothing to do with this promotion anymore I would just now like for them to collect as I am ****ed off with the service. Because I have been struggling to get anyone to assist I called in and a lady told me she’s been getting similar complaints which tells me they planned a promotion and can’t execute it right. So I am not the first to complain.